U.S. Filter Wastewater Group, Inc.

Siemens Water Technologies Pte. Ltd.

Evoqua Water Technologies Pte. Ltd.

Usf Filtration & Separations Group Inc.

Siemens Industry, Inc.

Pall Seitzschenk Filtersystems Gmbh

David John Cox

Fufang Zha

Warren Thomas Johnson

Robert James McMahon

Bruce Gregory Biltoft

Joachim Muller

Gary William Stollery

David Wood

Cinzia Lea

Georg Schnieder

Leon Keith Ernst

Roger William Phelps

Sargon Barkho

George Schneider

Robert James Mcmahon

A method of filtering a feed liquid in a membrane filtration assembly is provided comprising introducing feed liquid to be treated into a filtration chamber of a membrane filtration system including a membrane module having one or more permeable hollow membranes, the module being located in the filtration chamber, and the filtration chamber having an open upper end located above an upper header of the membrane module and a closed lower end, and feed tank surrounding the filtration chamber. The feed tank may be configured to provide the feed liquid through the open upper end of the filtration chamber, and the feed liquid may be applied to the surface of the membranes within the membrane module and withdrawn from the lumens of the membranes as filtrate.

Method and assembly for water filtration using a tube manifold to minimize backwash

A membrane filtration assembly () including having a filtrate carrier () for minimizing backwash. The membrane filtration assembly includes a membrane module () having one or more permeable hollow membranes () supported therein by an upper header () and a lower header (). The filtrate carrier () extends between the upper () and lower () headers to allow filtrate to be collected from either or both ends of membranes (). A filtrate collection chamber () is associated with the upper () and lower headers () and in fluid communication with lumens of the membranes () for collecting filtrate withdrawn through said membrane lumens. A filtration chamber () is provided for receiving feed liquid to be applied to the surface of membranes () within the module (). The filtration chamber () includes an open end for receiving the feed liquid. The open end is located beyond the height of the module () to enable gravity feed.

Assembly for water filtration using a tube manifold to minimise backwash

A membrane module includes at least one hollow fiber membrane; a first resin layer formed around an end of the at least one hollow fiber membrane; and a second resin layer chemically bound to the first resin layer, wherein the second resin layer is of greater flexibility than the first resin layer.

Membrane module

An apparatus for potting membranes. The apparatus may include a mould for receiving ends of the membranes, means for forming a first layer of a curable resin material around the ends in the mould, and means for applying a second layer of a flexible resin material to the first layer prior to full curing of the first layer. The flexible resin material may be chemically reactive with the curable resin material to form an adhesive bond therebetween. A potting sleeve may be positioned within the mould. A centrifuge may receive the curable resin and/or the flexible resin material upstream of the mould.

Apparatus for potting membranes

A membrane module () comprising a plurality of porous hollow membranes (). The membranes () extend between and are fixed at each end in a header (). One header () has one or more of openings () formed therein. The openings () are in fluid communication with a source of gas and/or liquid (). The other of the headers () is sealingly connected to and in fluid communication with a head-piece (). The head-piece () is adapted to couple to an associated head-piece of a further module to form a rack of modules (). A potting head () for use in mounting porous hollow membranes () is also disclosed comprising a preformed potting element (). The potting element () includes one or more cavities () for receiving curate potting material which, in use, supports said membranes ().

Square membrane manifold system

A membrane filtration manifold for connecting a filter submodule including one or more elongate bundles of semipermeable polymeric fibers is provided. The manifold includes a housing and connecting collar connected with said housing. The collar is adapted to receive and locate the submodule, where the submodule has a connecting sleeve with a locking formation. The submodule can be secured at one end to the collar by a clip adapted to engage both the collar and the locking formation to prevent axial withdrawal of the submodule from the collar. Also disclosed is a membrane filtration apparatus including a filter submodule including one or more elongate bundles of semipermeable polymeric fibers. The apparatus further includes a membrane filtration manifold removably connected at one end of said filter submodule and a basepiece removably connected to the other end of said filter submodule.

Membrane filtration manifold system

A restraining system for hollow fibers is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.

Hollow fibre restraining system

A method of forming a pot for an array of hollow fiber membranes () is provided, including the steps of placing the ends () of the fiber membranes () in a mould (); forming a first layer () of curable resin material in a non-cured state around the fiber membrane ends (), applying a second layer () of a polyurethane resin material to the first layer () prior to full curing of the first layer, the polyurethane resin material layer being chemically reactive with the first layer material to form an adhesive bond therebetween; at least partially curing both layers and removing the pot formed from the mould (), wherein the second layer material is of higher flexibility than the first layer material when each layer is fully cured. Apparatus for performing the method is also disclosed.

Potting method

Hollow fiber restraining system

A restraining system for hollow fibres is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such that in combination with said longitudinal elements they define a cage-like structure.

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Penrith, Australia

David John Cox